.container{
    width: 100%;
    height: 100%;
    // background-color: red;
    background: url('https://pic.netbian.com/uploads/allimg/210512/233947-162083398720e2.jpg') 100% 100%;
    
}
.wrap {
    height: 100%;
    position: absolute;
    width: 100%;
    background: #000;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content:center;
  
    span {
      color: #fff;
      font-size: 300%;
    }
  
    input {
      background-color: transparent;
      border: none;
      border-bottom: 2px solid #fff;
      outline: none;
      padding-bottom: 15px;
      margin-top: 30px;
      text-align: center;
      width: 400px;
      color: #fff;
      font-size: 250%;
    }
  }
  .chat{
      height: 100%;
      .list{
          height: 100%;
          padding-bottom: 80px;
          overflow-y: scroll;
      }
      input{
          border: 10px solid #000;
          bottom: 0;
          height: 60px;
          left: 0;
          outline: none;
          padding-left: 10px;
          position: absolute;
          right: 0;
          width: 100%;
          font-size: 150%;
      }
  }